Here are some things various publications have said about Tom Lehrer:
"More desperate than amusing" -- New York Herald Tribune
"He seldom has any point to make except obvious ones" -- Christian Science
Monitor
"Mr. Lehrer's muse [is] not fettered by such inhibiting factors as taste" --
New York Times
"Vulgarity" -- Pittsburgh Sun-Telegraph
"Obvious, jejune, and remarkably unsophisticated" -- London Evening
Standard
"Plays the piano acceptably" -- Oakland Tribune